R&S FSH Spectrum Analyzer Mode
Configuring Spectrum Measurements
Operating Manual 1173.6275.12 - 30 111
3.2.5 Working with Traces
The trace menu contains all functions available to customize the trace display.
3.2.5.1 Selecting the Trace Mode
The R&S FSH provides several trace modes. The trace mode defines the way the
R&S FSH writes the trace.
● Clear/Write
In its default state, the R&S FSH overwrites the trace after each sweep.
You can apply all detectors in this mode.
● Average
The trace is the result of the moving average over several sweeps.
The R&S FSH calculates the (moving) average of the power levels for each pixel
over a particular number of sweeps in the range from 2 to 999.
Averaging reduces the effects of noise, but has no effects on sine signals. Using
the trace averaging therefore is a good way to detect signals in the vicinity of
noise.
You can apply all detectors in this mode.
● Max Hold
The trace shows the maximum power levels that have been measured at each
pixel.
To overwrite a max hold trace, change a parameter in a way that the results can
not be compared any more, e.g. the span. Using the max hold trace mode is a
good way to detect intermittent signals or the maximum values of fluctuating
signals, for example.
Using the max hold trace mode automatically activates the max peak detector.
● Min Hold
The trace shows the minimum power levels that have been measured at each
pixel.
To overwrite a min hold trace, change a parameter in a way that the results can not
be compared any more, e.g. the span. Using the min hold trace mode is a good
way to highlight signals within noise or suppress intermittent signals.
Using the min hold trace mode automatically activates the min peak detector.
● View
The view trace mode freezes the current trace and aborts the measurement.
Using the view trace mode is a good way to evaluate the trace, for example with
markers.
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